keep in mind what shepp said,there's regular and supersized.
the super sized only comes in one color(iirc)
and the regular comes in two colors,standard grey and the dark navy blue version.
one thing to also keep in mind is that as slick as the regular sized blue version looks,it severely suffers from a form of gps,but blue instead of gold.
it took me three donor bots to make one complete,only to have the complete ones arm snap right off on first transformation
......think of g2 slingshot,only blue